package com.wsgxj.util;

import com.wsgxj.domain.sys.SysUser;
import org.apache.shiro.SecurityUtils;
import org.apache.shiro.session.Session;
import org.apache.shiro.subject.Subject;

//有关shiro的工具类
public class ShiroUtil {
	
	public static Session getSession() {
		return SecurityUtils.getSubject().getSession();
	}
	
	public static Subject getSubject() {
		return SecurityUtils.getSubject();
	}
	
	public static SysUser getUser() {
		return (SysUser)SecurityUtils.getSubject().getPrincipal();
	}
	
	public static Long getUserId() {
		return getUser().getUserId();
	}

	public static void setSessionAttribute(Object key, Object value) {
		getSession().setAttribute(key, value);
	}
	
	public static Object getSessionAttribute(Object key) {
		return getSession().getAttribute(key);
	}
	
	public static boolean isLogin() {
		return SecurityUtils.getSubject().getPrincipal() != null;
	}
	
	public static void logout() {
		SecurityUtils.getSubject().logout();
	}
	
	//
	public static String getKaptcha(String key) {
		Object kaptcha = getSessionAttribute(key);
		return kaptcha.toString();
	}

}
